I've always liked "kiddo" but that's a bit more general. Robin Hood (animated and Prince of Thieves) is a favorite of mine so "Little John" comes to mind. And, of course, "Maverick" and "Goose" are two of the best nicknames of all times.

My high school friends called me Debstar and Debita but my favorite is when the lady at the health center calls me Deborah but pronounces is Da-bore-uh.